import { CartBaseController } from './cart_base_controller'

export default class extends CartBaseController {
  static targets = [ 'methods', 'rates', 'form' ]

  connect () {
    this.formTarget.addEventListener('formdata', event => this.processShippingAddress(event.formData))
  }

  async rates (event) {
    event.preventDefault()
    event.stopPropagation()

    if (!this.formTarget.checkValidity()) {
      this.adressTarget.classList.add('was-validated')
      return
    }

    this.formTarget.classList.remove('was-validated')

    // FormDataEvent es muy reciente
    if (window.FormDataEvent) {
      // Esto lanza el evento formdata en el formulario
      new FormData(event.target)
    } else {
      // Fallback
      this.processShippingAddress(new FormData(event.target))
    }
  }

  payment (event) {
    event.preventDefault()
    event.stopPropagation()

    // FormDataEvent es muy reciente
    if (window.FormDataEvent) {
      // Esto lanza el evento formdata en el formulario
      new FormData(event.target)
    } else {
      this.processShippingRate(new FormData(event.target))
    }
  }

  async processShippingAddress (formData) {
    this.formDisabled = true

    const email = this.email
    const orderToken = this.token

    const ship_address_attributes = this.formDataToObject(formData)
    const bill_address_attributes = ship_address_attributes

    const response = await this.spree.checkout.orderUpdate({ orderToken }, { order: { email, ship_address_attributes, bill_address_attributes }})

    if (response.isFail()) {
      this.handleFailure(response)
      this.formDisabled = false
      return
    }

    const shippingMethods = await this.shippingMethods(orderToken)

    if (!shippingMethods) {
      this.formDisabled = false
      return
    }

    const shipping_rates = shippingMethods.included.filter(x => x.type == 'shipping_rate')
    // XXX: No hay varios paquetes
    const shipping_method = shippingMethods.data[0]
    const site = await this.site()

    await this.render({ shipping_method, shipping_rates, site })

    const nextStep = document.querySelector(`#${this.element.dataset.scrollTo}`)
    if (nextStep) nextStep.scrollIntoView()
  }

  async processShippingRate (formData) {
    const rate = this.formDataToObject(formData)
    const orderToken = this.token

    // XXX: Deshabilitar el formulario después del evento FormData, de
    // lo contrario el objeto queda vacío.
    this.ratesTarget.elements.forEach(x => x.disabled = true)

    const response = await window.spree.checkout.orderUpdate({ orderToken }, { order: { shipments_attributes: [{ ...rate }] } })

    if (response.isFail()) {
      this.handleFailure(response)
      return
    }

    this.cart = response

    // Continue to next step
    try {
      Turbolinks.visit(this.data.get('next'))
    } catch {
      window.location = this.data.get('next')
    }
  }

  async render (data = {}) {
    const request = await fetch(this.data.get('template'))
    const template = await request.text()

    this.methodsTarget.innerHTML = await this.engine.parseAndRender(template, data)
    this.ratesTarget.addEventListener('formdata', event => this.processShippingRate(event.formData))
  }
}